1 a596b957 2022-07-14 tracey /*
  2 a596b957 2022-07-14 tracey  * Copyright (c) 2016, 2019, 2020-2021 Tracey Emery <tracey@traceyemery.net>
  3 a596b957 2022-07-14 tracey  * Copyright (c) 2015 Mike Larkin <mlarkin@openbsd.org>
  4 a596b957 2022-07-14 tracey  * Copyright (c) 2013 David Gwynne <dlg@openbsd.org>
  5 a596b957 2022-07-14 tracey  * Copyright (c) 2013 Florian Obser <florian@openbsd.org>
  6 a596b957 2022-07-14 tracey  *
  7 a596b957 2022-07-14 tracey  * Permission to use, copy, modify, and distribute this software for any
  8 a596b957 2022-07-14 tracey  * purpose with or without fee is hereby granted, provided that the above
  9 a596b957 2022-07-14 tracey  * copyright notice and this permission notice appear in all copies.
 10 a596b957 2022-07-14 tracey  *
 11 a596b957 2022-07-14 tracey  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 12 a596b957 2022-07-14 tracey  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 13 a596b957 2022-07-14 tracey  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 14 a596b957 2022-07-14 tracey  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 15 a596b957 2022-07-14 tracey  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 16 a596b957 2022-07-14 tracey  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 17 a596b957 2022-07-14 tracey  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 18 a596b957 2022-07-14 tracey  */
 19 a596b957 2022-07-14 tracey 
 20 a596b957 2022-07-14 tracey #include <sys/param.h>
 21 a596b957 2022-07-14 tracey #include <sys/ioctl.h>
 22 a596b957 2022-07-14 tracey #include <sys/queue.h>
 23 a596b957 2022-07-14 tracey #include <sys/wait.h>
 24 a596b957 2022-07-14 tracey #include <sys/uio.h>
 25 a596b957 2022-07-14 tracey #include <sys/resource.h>
 26 a596b957 2022-07-14 tracey #include <sys/socket.h>
 27 a596b957 2022-07-14 tracey #include <sys/stat.h>
 28 a596b957 2022-07-14 tracey #include <sys/time.h>
 29 a596b957 2022-07-14 tracey #include <sys/types.h>
 30 a596b957 2022-07-14 tracey #include <sys/mman.h>
 31 a596b957 2022-07-14 tracey #include <sys/un.h>
 32 a596b957 2022-07-14 tracey 
 33 a596b957 2022-07-14 tracey #include <net/if.h>
 34 a596b957 2022-07-14 tracey #include <netinet/in.h>
 35 a596b957 2022-07-14 tracey 
 36 a596b957 2022-07-14 tracey #include <errno.h>
 37 a596b957 2022-07-14 tracey #include <event.h>
 38 a596b957 2022-07-14 tracey #include <fcntl.h>
 39 a596b957 2022-07-14 tracey #include <ifaddrs.h>
 40 a596b957 2022-07-14 tracey #include <imsg.h>
 41 a596b957 2022-07-14 tracey #include <limits.h>
 42 a596b957 2022-07-14 tracey #include <netdb.h>
 43 a596b957 2022-07-14 tracey #include <poll.h>
 44 a596b957 2022-07-14 tracey #include <pwd.h>
 45 a596b957 2022-07-14 tracey #include <stddef.h>
 46 a596b957 2022-07-14 tracey #include <stdio.h>
 47 a596b957 2022-07-14 tracey #include <stdlib.h>
 48 a596b957 2022-07-14 tracey #include <string.h>
 49 a596b957 2022-07-14 tracey #include <unistd.h>
 50 a596b957 2022-07-14 tracey #include <util.h>
 51 a596b957 2022-07-14 tracey 
 52 a596b957 2022-07-14 tracey #include "got_error.h"
 53 a596b957 2022-07-14 tracey #include "got_opentemp.h"
 54 a596b957 2022-07-14 tracey 
 55 a596b957 2022-07-14 tracey #include "proc.h"
 56 a596b957 2022-07-14 tracey #include "gotwebd.h"
 57 a596b957 2022-07-14 tracey 
 58 a596b957 2022-07-14 tracey #define SOCKS_BACKLOG 5
 59 a596b957 2022-07-14 tracey #define MAXIMUM(a, b)	(((a) > (b)) ? (a) : (b))
 60 a596b957 2022-07-14 tracey 
 61 a596b957 2022-07-14 tracey 
 62 a596b957 2022-07-14 tracey volatile int client_cnt;
 63 a596b957 2022-07-14 tracey 
 64 a596b957 2022-07-14 tracey struct timeval	timeout = { TIMEOUT_DEFAULT, 0 };
 65 a596b957 2022-07-14 tracey 
 66 a596b957 2022-07-14 tracey void	 sockets_sighdlr(int, short, void *);
 67 a596b957 2022-07-14 tracey void	 sockets_run(struct privsep *, struct privsep_proc *, void *);
 68 a596b957 2022-07-14 tracey void	 sockets_launch(void);
 69 a596b957 2022-07-14 tracey void	 sockets_purge(struct gotwebd *);
 70 a596b957 2022-07-14 tracey void	 sockets_accept_paused(int, short, void *);
 71 a596b957 2022-07-14 tracey void	 sockets_dup_new_socket(struct socket *, struct socket *);
 72 a596b957 2022-07-14 tracey void	 sockets_rlimit(int);
 73 a596b957 2022-07-14 tracey 
 74 a596b957 2022-07-14 tracey 
 75 a596b957 2022-07-14 tracey int	 sockets_dispatch_gotwebd(int, struct privsep_proc *, struct imsg *);
 76 a596b957 2022-07-14 tracey int	 sockets_unix_socket_listen(struct privsep *, struct socket *);
 77 a596b957 2022-07-14 tracey int	 sockets_create_socket(struct addresslist *, in_port_t);
 78 a596b957 2022-07-14 tracey int	 sockets_accept_reserve(int, struct sockaddr *, socklen_t *, int,
 79 a596b957 2022-07-14 tracey 	    volatile int *);
 80 a596b957 2022-07-14 tracey 
 81 a596b957 2022-07-14 tracey struct socket
 82 a596b957 2022-07-14 tracey 	*sockets_conf_new_socket(struct gotwebd *, struct server *, int, int,
 83 a596b957 2022-07-14 tracey 	    int);
 84 a596b957 2022-07-14 tracey 
 85 a596b957 2022-07-14 tracey int cgi_inflight = 0;
 86 a596b957 2022-07-14 tracey 
 87 a596b957 2022-07-14 tracey static struct privsep_proc procs[] = {
 88 a596b957 2022-07-14 tracey 	{ "gotwebd",	PROC_GOTWEBD,	sockets_dispatch_gotwebd  },
 89 a596b957 2022-07-14 tracey };
 90 a596b957 2022-07-14 tracey 
 91 a596b957 2022-07-14 tracey void
 92 a596b957 2022-07-14 tracey sockets(struct privsep *ps, struct privsep_proc *p)
 93 a596b957 2022-07-14 tracey {
 94 a596b957 2022-07-14 tracey 	proc_run(ps, p, procs, nitems(procs), sockets_run, NULL);
 95 a596b957 2022-07-14 tracey }
 96 a596b957 2022-07-14 tracey 
 97 a596b957 2022-07-14 tracey void
 98 a596b957 2022-07-14 tracey sockets_run(struct privsep *ps, struct privsep_proc *p, void *arg)
 99 a596b957 2022-07-14 tracey {
100 a596b957 2022-07-14 tracey 	if (config_init(ps->ps_env) == -1)
101 a596b957 2022-07-14 tracey 		fatal("failed to initialize configuration");
102 a596b957 2022-07-14 tracey 
103 a596b957 2022-07-14 tracey 	p->p_shutdown = sockets_shutdown;
104 a596b957 2022-07-14 tracey 
105 a596b957 2022-07-14 tracey 	sockets_rlimit(-1);
106 a596b957 2022-07-14 tracey 
107 a596b957 2022-07-14 tracey 	signal_del(&ps->ps_evsigchld);
108 a596b957 2022-07-14 tracey 	signal_set(&ps->ps_evsigchld, SIGCHLD, sockets_sighdlr, ps);
109 a596b957 2022-07-14 tracey 	signal_add(&ps->ps_evsigchld, NULL);
110 a596b957 2022-07-14 tracey 
111 a596b957 2022-07-14 tracey #ifndef PROFILE
112 a596b957 2022-07-14 tracey 	if (pledge("stdio rpath wpath cpath inet recvfd proc exec sendfd",
113 a596b957 2022-07-14 tracey 	    NULL) == -1)
114 a596b957 2022-07-14 tracey 		fatal("pledge");
115 a596b957 2022-07-14 tracey #endif
116 a596b957 2022-07-14 tracey }
117 a596b957 2022-07-14 tracey 
118 a596b957 2022-07-14 tracey void
119 a596b957 2022-07-14 tracey sockets_parse_sockets(struct gotwebd *env)
120 a596b957 2022-07-14 tracey {
121 a596b957 2022-07-14 tracey 	struct server *srv;
122 a596b957 2022-07-14 tracey 	struct socket *sock, *new_sock = NULL;
123 a596b957 2022-07-14 tracey 	struct address *a;
124 a596b957 2022-07-14 tracey 	int sock_id = 0, ipv4 = 0, ipv6 = 0;
125 a596b957 2022-07-14 tracey 
126 2ad48e9a 2022-08-16 stsp 	TAILQ_FOREACH(srv, &env->servers, entry) {
127 a596b957 2022-07-14 tracey 		if (srv->unix_socket) {
128 a596b957 2022-07-14 tracey 			sock_id++;
129 a596b957 2022-07-14 tracey 			new_sock = sockets_conf_new_socket(env, srv,
130 a596b957 2022-07-14 tracey 			    sock_id, UNIX, 0);
131 2ad48e9a 2022-08-16 stsp 			TAILQ_INSERT_TAIL(&env->sockets, new_sock, entry);
132 a596b957 2022-07-14 tracey 		}
133 a596b957 2022-07-14 tracey 
134 a596b957 2022-07-14 tracey 		if (srv->fcgi_socket) {
135 a596b957 2022-07-14 tracey 			sock_id++;
136 a596b957 2022-07-14 tracey 			new_sock = sockets_conf_new_socket(env, srv,
137 a596b957 2022-07-14 tracey 			    sock_id, FCGI, 0);
138 2ad48e9a 2022-08-16 stsp 			TAILQ_INSERT_TAIL(&env->sockets, new_sock, entry);
139 a596b957 2022-07-14 tracey 
140 a596b957 2022-07-14 tracey 			/* add ipv6 children */
141 2ad48e9a 2022-08-16 stsp 			TAILQ_FOREACH(sock, &env->sockets, entry) {
142 a596b957 2022-07-14 tracey 				ipv4 = ipv6 = 0;
143 a596b957 2022-07-14 tracey 
144 e087e1f6 2022-08-16 stsp 				TAILQ_FOREACH(a, &sock->conf.al, entry) {
145 a596b957 2022-07-14 tracey 					if (a->ss.ss_family == AF_INET)
146 a596b957 2022-07-14 tracey 						ipv4 = 1;
147 a596b957 2022-07-14 tracey 					if (a->ss.ss_family == AF_INET6)
148 a596b957 2022-07-14 tracey 						ipv6 = 1;
149 a596b957 2022-07-14 tracey 				}
150 a596b957 2022-07-14 tracey 
151 a596b957 2022-07-14 tracey 				/* create ipv6 sock */
152 a596b957 2022-07-14 tracey 				if (ipv4 == 1 && ipv6 == 1) {
153 a596b957 2022-07-14 tracey 					sock_id++;
154 a596b957 2022-07-14 tracey 					sock->conf.child_id = sock_id;
155 a596b957 2022-07-14 tracey 					new_sock = sockets_conf_new_socket(env,
156 a596b957 2022-07-14 tracey 					    srv, sock_id, FCGI, 1);
157 a596b957 2022-07-14 tracey 					sockets_dup_new_socket(sock, new_sock);
158 2ad48e9a 2022-08-16 stsp 					TAILQ_INSERT_TAIL(&env->sockets,
159 a596b957 2022-07-14 tracey 					    new_sock, entry);
160 a596b957 2022-07-14 tracey 					continue;
161 a596b957 2022-07-14 tracey 				}
162 a596b957 2022-07-14 tracey 			}
163 a596b957 2022-07-14 tracey 		}
164 a596b957 2022-07-14 tracey 	}
165 a596b957 2022-07-14 tracey }
166 a596b957 2022-07-14 tracey 
167 a596b957 2022-07-14 tracey void
168 a596b957 2022-07-14 tracey sockets_dup_new_socket(struct socket *p_sock, struct socket *sock)
169 a596b957 2022-07-14 tracey {
170 a596b957 2022-07-14 tracey 	struct address *a, *acp;
171 a596b957 2022-07-14 tracey 	int n;
172 a596b957 2022-07-14 tracey 
173 a596b957 2022-07-14 tracey 	sock->conf.parent_id = p_sock->conf.id;
174 a596b957 2022-07-14 tracey 	sock->conf.ipv4 = 0;
175 a596b957 2022-07-14 tracey 	sock->conf.ipv6 = 1;
176 a596b957 2022-07-14 tracey 
177 a596b957 2022-07-14 tracey 	memcpy(&sock->conf.srv_name, p_sock->conf.srv_name,
178 a596b957 2022-07-14 tracey 	    sizeof(sock->conf.srv_name));
179 a596b957 2022-07-14 tracey 
180 a596b957 2022-07-14 tracey 	n = snprintf(sock->conf.name, GOTWEBD_MAXTEXT, "%s_child",
181 a596b957 2022-07-14 tracey 	    p_sock->conf.srv_name);
182 438d0cc3 2022-08-16 op 	if (n < 0 || (size_t)n >= GOTWEBD_MAXTEXT) {
183 a596b957 2022-07-14 tracey 		free(p_sock);
184 a596b957 2022-07-14 tracey 		free(sock);
185 a596b957 2022-07-14 tracey 		fatalx("%s: snprintf", __func__);
186 a596b957 2022-07-14 tracey 	}
187 a596b957 2022-07-14 tracey 
188 e087e1f6 2022-08-16 stsp 	TAILQ_FOREACH(a, &p_sock->conf.al, entry) {
189 a596b957 2022-07-14 tracey 		if (a->ss.ss_family == AF_INET)
190 a596b957 2022-07-14 tracey 			continue;
191 a596b957 2022-07-14 tracey 
192 a596b957 2022-07-14 tracey 		if ((acp = calloc(1, sizeof(*acp))) == NULL)
193 a596b957 2022-07-14 tracey 			fatal("%s: calloc", __func__);
194 a596b957 2022-07-14 tracey 		memcpy(&acp->ss, &a->ss, sizeof(acp->ss));
195 a596b957 2022-07-14 tracey 		acp->ipproto = a->ipproto;
196 a596b957 2022-07-14 tracey 		acp->prefixlen = a->prefixlen;
197 a596b957 2022-07-14 tracey 		acp->port = a->port;
198 a596b957 2022-07-14 tracey 		if (strlen(a->ifname) != 0) {
199 a596b957 2022-07-14 tracey 			if (strlcpy(acp->ifname, a->ifname,
200 a596b957 2022-07-14 tracey 			    sizeof(acp->ifname)) >= sizeof(acp->ifname)) {
201 a596b957 2022-07-14 tracey 				fatalx("%s: interface name truncated",
202 a596b957 2022-07-14 tracey 				    __func__);
203 a596b957 2022-07-14 tracey 			}
204 a596b957 2022-07-14 tracey 		}
205 a596b957 2022-07-14 tracey 
206 e087e1f6 2022-08-16 stsp 		TAILQ_INSERT_TAIL(&sock->conf.al, acp, entry);
207 a596b957 2022-07-14 tracey 	}
208 a596b957 2022-07-14 tracey }
209 a596b957 2022-07-14 tracey 
210 a596b957 2022-07-14 tracey struct socket *
211 a596b957 2022-07-14 tracey sockets_conf_new_socket(struct gotwebd *env, struct server *srv, int id,
212 a596b957 2022-07-14 tracey     int type, int is_dup)
213 a596b957 2022-07-14 tracey {
214 a596b957 2022-07-14 tracey 	struct socket *sock;
215 a596b957 2022-07-14 tracey 	struct address *a, *acp;
216 a596b957 2022-07-14 tracey 	int n;
217 a596b957 2022-07-14 tracey 
218 a596b957 2022-07-14 tracey 	if ((sock = calloc(1, sizeof(*sock))) == NULL)
219 a596b957 2022-07-14 tracey 		fatalx("%s: calloc", __func__);
220 a596b957 2022-07-14 tracey 
221 e087e1f6 2022-08-16 stsp 	TAILQ_INIT(&sock->conf.al);
222 a596b957 2022-07-14 tracey 
223 a596b957 2022-07-14 tracey 	sock->conf.parent_id = 0;
224 a596b957 2022-07-14 tracey 	sock->conf.id = id;
225 a596b957 2022-07-14 tracey 
226 a596b957 2022-07-14 tracey 	sock->fd = -1;
227 a596b957 2022-07-14 tracey 
228 a596b957 2022-07-14 tracey 	sock->conf.type = type;
229 a596b957 2022-07-14 tracey 
230 a596b957 2022-07-14 tracey 	if (type == UNIX) {
231 a596b957 2022-07-14 tracey 		if (strlcpy(sock->conf.unix_socket_name,
232 a596b957 2022-07-14 tracey 		    srv->unix_socket_name,
233 a596b957 2022-07-14 tracey 		    sizeof(sock->conf.unix_socket_name)) >=
234 a596b957 2022-07-14 tracey 		    sizeof(sock->conf.unix_socket_name)) {
235 a596b957 2022-07-14 tracey 			free(sock);
236 a596b957 2022-07-14 tracey 			fatalx("%s: strlcpy", __func__);
237 a596b957 2022-07-14 tracey 		}
238 a596b957 2022-07-14 tracey 	} else
239 a596b957 2022-07-14 tracey 		sock->conf.ipv4 = 1;
240 a596b957 2022-07-14 tracey 
241 a596b957 2022-07-14 tracey 	sock->conf.fcgi_socket_port = srv->fcgi_socket_port;
242 a596b957 2022-07-14 tracey 
243 a596b957 2022-07-14 tracey 	if (is_dup)
244 a596b957 2022-07-14 tracey 		goto done;
245 a596b957 2022-07-14 tracey 
246 a596b957 2022-07-14 tracey 	n = snprintf(sock->conf.name, GOTWEBD_MAXTEXT, "%s_parent",
247 a596b957 2022-07-14 tracey 	    srv->name);
248 438d0cc3 2022-08-16 op 	if (n < 0 || (size_t)n >= GOTWEBD_MAXTEXT) {
249 a596b957 2022-07-14 tracey 		free(sock);
250 a596b957 2022-07-14 tracey 		fatalx("%s: snprintf", __func__);
251 a596b957 2022-07-14 tracey 	}
252 a596b957 2022-07-14 tracey 
253 a596b957 2022-07-14 tracey 	if (strlcpy(sock->conf.srv_name, srv->name,
254 a596b957 2022-07-14 tracey 	    sizeof(sock->conf.srv_name)) >= sizeof(sock->conf.srv_name)) {
255 a596b957 2022-07-14 tracey 		free(sock);
256 a596b957 2022-07-14 tracey 		fatalx("%s: strlcpy", __func__);
257 a596b957 2022-07-14 tracey 	}
258 a596b957 2022-07-14 tracey 
259 e087e1f6 2022-08-16 stsp 	TAILQ_FOREACH(a, &srv->al, entry) {
260 a596b957 2022-07-14 tracey 		if ((acp = calloc(1, sizeof(*acp))) == NULL) {
261 a596b957 2022-07-14 tracey 			free(sock);
262 a596b957 2022-07-14 tracey 			fatal("%s: calloc", __func__);
263 a596b957 2022-07-14 tracey 		}
264 a596b957 2022-07-14 tracey 		memcpy(&acp->ss, &a->ss, sizeof(acp->ss));
265 a596b957 2022-07-14 tracey 		acp->ipproto = a->ipproto;
266 a596b957 2022-07-14 tracey 		acp->prefixlen = a->prefixlen;
267 a596b957 2022-07-14 tracey 		acp->port = a->port;
268 a596b957 2022-07-14 tracey 		if (strlen(a->ifname) != 0) {
269 a596b957 2022-07-14 tracey 			if (strlcpy(acp->ifname, a->ifname,
270 a596b957 2022-07-14 tracey 			    sizeof(acp->ifname)) >= sizeof(acp->ifname)) {
271 a596b957 2022-07-14 tracey 				fatalx("%s: interface name truncated",
272 a596b957 2022-07-14 tracey 				    __func__);
273 a596b957 2022-07-14 tracey 			}
274 a596b957 2022-07-14 tracey 		}
275 a596b957 2022-07-14 tracey 
276 e087e1f6 2022-08-16 stsp 		TAILQ_INSERT_TAIL(&sock->conf.al, acp, entry);
277 a596b957 2022-07-14 tracey 	}
278 a596b957 2022-07-14 tracey done:
279 a596b957 2022-07-14 tracey 	return (sock);
280 a596b957 2022-07-14 tracey }
281 a596b957 2022-07-14 tracey 
282 a596b957 2022-07-14 tracey void
283 a596b957 2022-07-14 tracey sockets_launch(void)
284 a596b957 2022-07-14 tracey {
285 a596b957 2022-07-14 tracey 	struct socket *sock;
286 a596b957 2022-07-14 tracey 
287 2ad48e9a 2022-08-16 stsp 	TAILQ_FOREACH(sock, &gotwebd_env->sockets, entry) {
288 a596b957 2022-07-14 tracey 		log_debug("%s: configuring socket %d (%d)", __func__,
289 a596b957 2022-07-14 tracey 		    sock->conf.id, sock->fd);
290 a596b957 2022-07-14 tracey 
291 a596b957 2022-07-14 tracey 		event_set(&sock->ev, sock->fd, EV_READ | EV_PERSIST,
292 a596b957 2022-07-14 tracey 		    sockets_socket_accept, sock);
293 a596b957 2022-07-14 tracey 
294 a596b957 2022-07-14 tracey 		if (event_add(&sock->ev, NULL))
295 a596b957 2022-07-14 tracey 			fatalx("event add sock");
296 a596b957 2022-07-14 tracey 
297 a596b957 2022-07-14 tracey 		evtimer_set(&sock->pause, sockets_accept_paused, sock);
298 a596b957 2022-07-14 tracey 
299 a596b957 2022-07-14 tracey 		log_debug("%s: running socket listener %d", __func__,
300 a596b957 2022-07-14 tracey 		    sock->conf.id);
301 a596b957 2022-07-14 tracey 	}
302 a596b957 2022-07-14 tracey }
303 a596b957 2022-07-14 tracey 
304 a596b957 2022-07-14 tracey void
305 a596b957 2022-07-14 tracey sockets_purge(struct gotwebd *env)
306 a596b957 2022-07-14 tracey {
307 a596b957 2022-07-14 tracey 	struct socket *sock, *tsock;
308 a596b957 2022-07-14 tracey 
309 a596b957 2022-07-14 tracey 	/* shutdown and remove sockets */
310 2ad48e9a 2022-08-16 stsp 	TAILQ_FOREACH_SAFE(sock, &env->sockets, entry, tsock) {
311 a596b957 2022-07-14 tracey 		if (event_initialized(&sock->ev))
312 a596b957 2022-07-14 tracey 			event_del(&sock->ev);
313 a596b957 2022-07-14 tracey 		if (evtimer_initialized(&sock->evt))
314 a596b957 2022-07-14 tracey 			evtimer_del(&sock->evt);
315 a596b957 2022-07-14 tracey 		if (evtimer_initialized(&sock->pause))
316 a596b957 2022-07-14 tracey 			evtimer_del(&sock->pause);
317 a596b957 2022-07-14 tracey 		if (sock->fd != -1)
318 a596b957 2022-07-14 tracey 			close(sock->fd);
319 2ad48e9a 2022-08-16 stsp 		TAILQ_REMOVE(&env->sockets, sock, entry);
320 a596b957 2022-07-14 tracey 	}
321 a596b957 2022-07-14 tracey }
322 a596b957 2022-07-14 tracey 
323 a596b957 2022-07-14 tracey int
324 a596b957 2022-07-14 tracey sockets_dispatch_gotwebd(int fd, struct privsep_proc *p, struct imsg *imsg)
325 a596b957 2022-07-14 tracey {
326 a596b957 2022-07-14 tracey 	struct privsep *ps = p->p_ps;
327 a596b957 2022-07-14 tracey 	int res = 0, cmd = 0, verbose;
328 a596b957 2022-07-14 tracey 
329 a596b957 2022-07-14 tracey 	switch (imsg->hdr.type) {
330 a596b957 2022-07-14 tracey 	case IMSG_CFG_SRV:
331 a596b957 2022-07-14 tracey 		config_getserver(gotwebd_env, imsg);
332 a596b957 2022-07-14 tracey 		break;
333 a596b957 2022-07-14 tracey 	case IMSG_CFG_SOCK:
334 a596b957 2022-07-14 tracey 		config_getsock(gotwebd_env, imsg);
335 a596b957 2022-07-14 tracey 		break;
336 a596b957 2022-07-14 tracey 	case IMSG_CFG_FD:
337 a596b957 2022-07-14 tracey 		config_getfd(gotwebd_env, imsg);
338 a596b957 2022-07-14 tracey 		break;
339 a596b957 2022-07-14 tracey 	case IMSG_CFG_DONE:
340 a596b957 2022-07-14 tracey 		config_getcfg(gotwebd_env, imsg);
341 a596b957 2022-07-14 tracey 		break;
342 a596b957 2022-07-14 tracey 	case IMSG_CTL_START:
343 a596b957 2022-07-14 tracey 		sockets_launch();
344 a596b957 2022-07-14 tracey 		break;
345 a596b957 2022-07-14 tracey 	case IMSG_CTL_VERBOSE:
346 a596b957 2022-07-14 tracey 		IMSG_SIZE_CHECK(imsg, &verbose);
347 a596b957 2022-07-14 tracey 		memcpy(&verbose, imsg->data, sizeof(verbose));
348 a596b957 2022-07-14 tracey 		log_setverbose(verbose);
349 a596b957 2022-07-14 tracey 		break;
350 a596b957 2022-07-14 tracey 	default:
351 a596b957 2022-07-14 tracey 		return -1;
352 a596b957 2022-07-14 tracey 	}
353 a596b957 2022-07-14 tracey 
354 a596b957 2022-07-14 tracey 	switch (cmd) {
355 a596b957 2022-07-14 tracey 	case 0:
356 a596b957 2022-07-14 tracey 		break;
357 a596b957 2022-07-14 tracey 	default:
358 a596b957 2022-07-14 tracey 		if (proc_compose_imsg(ps, PROC_GOTWEBD, -1, cmd,
359 a596b957 2022-07-14 tracey 		    imsg->hdr.peerid, -1, &res, sizeof(res)) == -1)
360 a596b957 2022-07-14 tracey 			return -1;
361 a596b957 2022-07-14 tracey 		break;
362 a596b957 2022-07-14 tracey 	}
363 a596b957 2022-07-14 tracey 
364 a596b957 2022-07-14 tracey 	return 0;
365 a596b957 2022-07-14 tracey }
366 a596b957 2022-07-14 tracey 
367 a596b957 2022-07-14 tracey void
368 a596b957 2022-07-14 tracey sockets_sighdlr(int sig, short event, void *arg)
369 a596b957 2022-07-14 tracey {
370 a596b957 2022-07-14 tracey 	switch (sig) {
371 a596b957 2022-07-14 tracey 	case SIGHUP:
372 a596b957 2022-07-14 tracey 		log_info("%s: ignoring SIGHUP", __func__);
373 a596b957 2022-07-14 tracey 		break;
374 a596b957 2022-07-14 tracey 	case SIGPIPE:
375 a596b957 2022-07-14 tracey 		log_info("%s: ignoring SIGPIPE", __func__);
376 a596b957 2022-07-14 tracey 		break;
377 a596b957 2022-07-14 tracey 	case SIGUSR1:
378 a596b957 2022-07-14 tracey 		log_info("%s: ignoring SIGUSR1", __func__);
379 a596b957 2022-07-14 tracey 		break;
380 a596b957 2022-07-14 tracey 	case SIGCHLD:
381 a596b957 2022-07-14 tracey 		break;
382 a596b957 2022-07-14 tracey 	default:
383 a596b957 2022-07-14 tracey 		log_info("SIGNAL: %d", sig);
384 a596b957 2022-07-14 tracey 		fatalx("unexpected signal");
385 a596b957 2022-07-14 tracey 	}
386 a596b957 2022-07-14 tracey }
387 a596b957 2022-07-14 tracey 
388 a596b957 2022-07-14 tracey void
389 a596b957 2022-07-14 tracey sockets_shutdown(void)
390 a596b957 2022-07-14 tracey {
391 a596b957 2022-07-14 tracey 	struct server *srv, *tsrv;
392 a596b957 2022-07-14 tracey 	struct socket *sock, *tsock;
393 a596b957 2022-07-14 tracey 
394 a596b957 2022-07-14 tracey 	sockets_purge(gotwebd_env);
395 a596b957 2022-07-14 tracey 
396 a596b957 2022-07-14 tracey 	/* clean sockets */
397 2ad48e9a 2022-08-16 stsp 	TAILQ_FOREACH_SAFE(sock, &gotwebd_env->sockets, entry, tsock) {
398 2ad48e9a 2022-08-16 stsp 		TAILQ_REMOVE(&gotwebd_env->sockets, sock, entry);
399 a596b957 2022-07-14 tracey 		close(sock->fd);
400 a596b957 2022-07-14 tracey 		free(sock);
401 a596b957 2022-07-14 tracey 	}
402 a596b957 2022-07-14 tracey 
403 a596b957 2022-07-14 tracey 	/* clean servers */
404 2ad48e9a 2022-08-16 stsp 	TAILQ_FOREACH_SAFE(srv, &gotwebd_env->servers, entry, tsrv)
405 a596b957 2022-07-14 tracey 		free(srv);
406 a596b957 2022-07-14 tracey 
407 a596b957 2022-07-14 tracey 	free(gotwebd_env);
408 a596b957 2022-07-14 tracey }
409 a596b957 2022-07-14 tracey 
410 a596b957 2022-07-14 tracey int
411 a596b957 2022-07-14 tracey sockets_privinit(struct gotwebd *env, struct socket *sock)
412 a596b957 2022-07-14 tracey {
413 a596b957 2022-07-14 tracey 	struct privsep *ps = env->gotwebd_ps;
414 a596b957 2022-07-14 tracey 
415 a596b957 2022-07-14 tracey 	if (sock->conf.type == UNIX) {
416 a596b957 2022-07-14 tracey 		log_debug("%s: initializing unix socket %s", __func__,
417 a596b957 2022-07-14 tracey 		    sock->conf.unix_socket_name);
418 a596b957 2022-07-14 tracey 		sock->fd = sockets_unix_socket_listen(ps, sock);
419 a596b957 2022-07-14 tracey 		if (sock->fd == -1) {
420 a596b957 2022-07-14 tracey 			log_warnx("%s: create unix socket failed", __func__);
421 a596b957 2022-07-14 tracey 			return -1;
422 a596b957 2022-07-14 tracey 		}
423 a596b957 2022-07-14 tracey 	}
424 a596b957 2022-07-14 tracey 
425 a596b957 2022-07-14 tracey 	if (sock->conf.type == FCGI) {
426 a596b957 2022-07-14 tracey 		log_debug("%s: initializing fcgi socket for %s", __func__,
427 a596b957 2022-07-14 tracey 		    sock->conf.name);
428 e087e1f6 2022-08-16 stsp 		sock->fd = sockets_create_socket(&sock->conf.al,
429 a596b957 2022-07-14 tracey 		    sock->conf.fcgi_socket_port);
430 a596b957 2022-07-14 tracey 		if (sock->fd == -1) {
431 a596b957 2022-07-14 tracey 			log_warnx("%s: create unix socket failed", __func__);
432 a596b957 2022-07-14 tracey 			return -1;
433 a596b957 2022-07-14 tracey 		}
434 a596b957 2022-07-14 tracey 	}
435 a596b957 2022-07-14 tracey 
436 a596b957 2022-07-14 tracey 	return 0;
437 a596b957 2022-07-14 tracey }
438 a596b957 2022-07-14 tracey 
439 a596b957 2022-07-14 tracey int
440 a596b957 2022-07-14 tracey sockets_unix_socket_listen(struct privsep *ps, struct socket *sock)
441 a596b957 2022-07-14 tracey {
442 a596b957 2022-07-14 tracey 	struct gotwebd *env = ps->ps_env;
443 a596b957 2022-07-14 tracey 	struct sockaddr_un sun;
444 a596b957 2022-07-14 tracey 	struct socket *tsock;
445 a596b957 2022-07-14 tracey 	int u_fd = -1;
446 a596b957 2022-07-14 tracey 	mode_t old_umask, mode;
447 a596b957 2022-07-14 tracey 
448 2ad48e9a 2022-08-16 stsp 	TAILQ_FOREACH(tsock, &env->sockets, entry) {
449 a596b957 2022-07-14 tracey 		if (strcmp(tsock->conf.unix_socket_name,
450 a596b957 2022-07-14 tracey 		    sock->conf.unix_socket_name) == 0 &&
451 a596b957 2022-07-14 tracey 		    tsock->fd != -1)
452 a596b957 2022-07-14 tracey 			return (tsock->fd);
453 a596b957 2022-07-14 tracey 	}
454 a596b957 2022-07-14 tracey 
455 a596b957 2022-07-14 tracey 	u_fd = socket(AF_UNIX, SOCK_STREAM | SOCK_NONBLOCK| SOCK_CLOEXEC, 0);
456 a596b957 2022-07-14 tracey 	if (u_fd == -1) {
457 a596b957 2022-07-14 tracey 		log_warn("%s: socket", __func__);
458 a596b957 2022-07-14 tracey 		return -1;
459 a596b957 2022-07-14 tracey 	}
460 a596b957 2022-07-14 tracey 
461 a596b957 2022-07-14 tracey 	sun.sun_family = AF_UNIX;
462 a596b957 2022-07-14 tracey 	if (strlcpy(sun.sun_path, sock->conf.unix_socket_name,
463 a596b957 2022-07-14 tracey 	    sizeof(sun.sun_path)) >= sizeof(sun.sun_path)) {
464 a596b957 2022-07-14 tracey 		log_warn("%s: %s name too long", __func__,
465 a596b957 2022-07-14 tracey 		    sock->conf.unix_socket_name);
466 a596b957 2022-07-14 tracey 		close(u_fd);
467 a596b957 2022-07-14 tracey 		return -1;
468 a596b957 2022-07-14 tracey 	}
469 a596b957 2022-07-14 tracey 
470 a596b957 2022-07-14 tracey 	if (unlink(sock->conf.unix_socket_name) == -1) {
471 a596b957 2022-07-14 tracey 		if (errno != ENOENT) {
472 a596b957 2022-07-14 tracey 			log_warn("%s: unlink %s", __func__,
473 a596b957 2022-07-14 tracey 			    sock->conf.unix_socket_name);
474 a596b957 2022-07-14 tracey 			close(u_fd);
475 a596b957 2022-07-14 tracey 			return -1;
476 a596b957 2022-07-14 tracey 		}
477 a596b957 2022-07-14 tracey 	}
478 a596b957 2022-07-14 tracey 
479 a596b957 2022-07-14 tracey 	old_umask = umask(S_IXUSR|S_IXGRP|S_IWOTH|S_IROTH|S_IXOTH);
480 a596b957 2022-07-14 tracey 	mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP;
481 a596b957 2022-07-14 tracey 
482 a596b957 2022-07-14 tracey 	if (bind(u_fd, (struct sockaddr *)&sun, sizeof(sun)) == -1) {
483 a596b957 2022-07-14 tracey 		log_warn("%s: bind: %s", __func__, sock->conf.unix_socket_name);
484 a596b957 2022-07-14 tracey 		close(u_fd);
485 a596b957 2022-07-14 tracey 		(void)umask(old_umask);
486 a596b957 2022-07-14 tracey 		return -1;
487 a596b957 2022-07-14 tracey 	}
488 a596b957 2022-07-14 tracey 
489 a596b957 2022-07-14 tracey 	(void)umask(old_umask);
490 a596b957 2022-07-14 tracey 
491 a596b957 2022-07-14 tracey 	if (chmod(sock->conf.unix_socket_name, mode) == -1) {
492 a596b957 2022-07-14 tracey 		log_warn("%s: chmod", __func__);
493 a596b957 2022-07-14 tracey 		close(u_fd);
494 a596b957 2022-07-14 tracey 		(void)unlink(sock->conf.unix_socket_name);
495 a596b957 2022-07-14 tracey 		return -1;
496 a596b957 2022-07-14 tracey 	}
497 a596b957 2022-07-14 tracey 
498 a596b957 2022-07-14 tracey 	if (chown(sock->conf.unix_socket_name, ps->ps_pw->pw_uid,
499 a596b957 2022-07-14 tracey 	    ps->ps_pw->pw_gid) == -1) {
500 a596b957 2022-07-14 tracey 		log_warn("%s: chown", __func__);
501 a596b957 2022-07-14 tracey 		close(u_fd);
502 a596b957 2022-07-14 tracey 		(void)unlink(sock->conf.unix_socket_name);
503 a596b957 2022-07-14 tracey 		return -1;
504 a596b957 2022-07-14 tracey 	}
505 a596b957 2022-07-14 tracey 
506 a596b957 2022-07-14 tracey 	if (listen(u_fd, SOCKS_BACKLOG) == -1) {
507 a596b957 2022-07-14 tracey 		log_warn("%s: listen", __func__);
508 a596b957 2022-07-14 tracey 		return -1;
509 a596b957 2022-07-14 tracey 	}
510 a596b957 2022-07-14 tracey 
511 a596b957 2022-07-14 tracey 	return u_fd;
512 a596b957 2022-07-14 tracey }
513 a596b957 2022-07-14 tracey 
514 a596b957 2022-07-14 tracey int
515 a596b957 2022-07-14 tracey sockets_create_socket(struct addresslist *al, in_port_t port)
516 a596b957 2022-07-14 tracey {
517 a596b957 2022-07-14 tracey 	struct addrinfo hints;
518 a596b957 2022-07-14 tracey 	struct address *a;
519 a596b957 2022-07-14 tracey 	int fd = -1, o_val = 1, flags;
520 a596b957 2022-07-14 tracey 
521 a596b957 2022-07-14 tracey 	memset(&hints, 0, sizeof(hints));
522 a596b957 2022-07-14 tracey 	hints.ai_family = AF_UNSPEC;
523 a596b957 2022-07-14 tracey 	hints.ai_socktype = SOCK_STREAM;
524 a596b957 2022-07-14 tracey 	hints.ai_flags |= AI_PASSIVE;
525 a596b957 2022-07-14 tracey 
526 a596b957 2022-07-14 tracey 	TAILQ_FOREACH(a, al, entry) {
527 14aa6a72 2022-08-06 stsp 		switch (a->ss.ss_family) {
528 14aa6a72 2022-08-06 stsp 		case AF_INET:
529 14aa6a72 2022-08-06 stsp 			((struct sockaddr_in *)(&a->ss))->sin_port = port;
530 14aa6a72 2022-08-06 stsp 			break;
531 14aa6a72 2022-08-06 stsp 		case AF_INET6:
532 14aa6a72 2022-08-06 stsp 			((struct sockaddr_in6 *)(&a->ss))->sin6_port = port;
533 14aa6a72 2022-08-06 stsp 			break;
534 14aa6a72 2022-08-06 stsp 		default:
535 14aa6a72 2022-08-06 stsp 			log_warnx("%s: unknown address family", __func__);
536 a596b957 2022-07-14 tracey 			goto fail;
537 a596b957 2022-07-14 tracey 		}
538 a596b957 2022-07-14 tracey 
539 a596b957 2022-07-14 tracey 		fd = socket(a->ss.ss_family, hints.ai_socktype,
540 a596b957 2022-07-14 tracey 		    a->ipproto);
541 a596b957 2022-07-14 tracey 			log_debug("%s: opening socket (%d) for %s", __func__,
542 a596b957 2022-07-14 tracey 			    fd, a->ifname);
543 a596b957 2022-07-14 tracey 
544 a596b957 2022-07-14 tracey 		if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &o_val,
545 a596b957 2022-07-14 tracey 		    sizeof(int)) == -1) {
546 a596b957 2022-07-14 tracey 			log_warn("%s: setsockopt error", __func__);
547 a596b957 2022-07-14 tracey 			return -1;
548 a596b957 2022-07-14 tracey 		}
549 a596b957 2022-07-14 tracey 
550 a596b957 2022-07-14 tracey 		/* non-blocking */
551 a596b957 2022-07-14 tracey 		flags = fcntl(fd, F_GETFL);
552 a596b957 2022-07-14 tracey 		flags |= O_NONBLOCK;
553 a596b957 2022-07-14 tracey 		fcntl(fd, F_SETFL, flags);
554 a596b957 2022-07-14 tracey 
555 a596b957 2022-07-14 tracey 		if (bind(fd, (struct sockaddr *)&a->ss, a->ss.ss_len) == -1) {
556 a596b957 2022-07-14 tracey 			close(fd);
557 a596b957 2022-07-14 tracey 			log_info("%s: can't bind to port %d", __func__,
558 a596b957 2022-07-14 tracey 			    ntohs(port));
559 a596b957 2022-07-14 tracey 			goto fail;
560 a596b957 2022-07-14 tracey 		}
561 a596b957 2022-07-14 tracey 
562 a596b957 2022-07-14 tracey 		if (listen(fd, SOMAXCONN) == -1) {
563 a596b957 2022-07-14 tracey 			log_warn("%s, unable to listen on socket", __func__);
564 a596b957 2022-07-14 tracey 			goto fail;
565 a596b957 2022-07-14 tracey 		}
566 a596b957 2022-07-14 tracey 	}
567 a596b957 2022-07-14 tracey 
568 a596b957 2022-07-14 tracey 	free(a);
569 a596b957 2022-07-14 tracey 	return (fd);
570 a596b957 2022-07-14 tracey fail:
571 a596b957 2022-07-14 tracey 	free(a);
572 a596b957 2022-07-14 tracey 	return -1;
573 a596b957 2022-07-14 tracey }
574 a596b957 2022-07-14 tracey 
575 a596b957 2022-07-14 tracey int
576 a596b957 2022-07-14 tracey sockets_accept_reserve(int sockfd, struct sockaddr *addr, socklen_t *addrlen,
577 a596b957 2022-07-14 tracey     int reserve, volatile int *counter)
578 a596b957 2022-07-14 tracey {
579 a596b957 2022-07-14 tracey 	int ret;
580 a596b957 2022-07-14 tracey 
581 a596b957 2022-07-14 tracey 	if (getdtablecount() + reserve +
582 a596b957 2022-07-14 tracey 	    ((*counter + 1) * FD_NEEDED) >= getdtablesize()) {
583 a596b957 2022-07-14 tracey 		log_debug("inflight fds exceeded");
584 a596b957 2022-07-14 tracey 		errno = EMFILE;
585 a596b957 2022-07-14 tracey 		return -1;
586 a596b957 2022-07-14 tracey 	}
587 a596b957 2022-07-14 tracey 
588 a596b957 2022-07-14 tracey 	if ((ret = accept4(sockfd, addr, addrlen,
589 a596b957 2022-07-14 tracey 	    SOCK_NONBLOCK | SOCK_CLOEXEC)) > -1) {
590 a596b957 2022-07-14 tracey 		(*counter)++;
591 a596b957 2022-07-14 tracey 		log_debug("inflight incremented, now %d", *counter);
592 a596b957 2022-07-14 tracey 	}
593 a596b957 2022-07-14 tracey 
594 a596b957 2022-07-14 tracey 	return ret;
595 a596b957 2022-07-14 tracey }
596 a596b957 2022-07-14 tracey 
597 a596b957 2022-07-14 tracey void
598 a596b957 2022-07-14 tracey sockets_accept_paused(int fd, short events, void *arg)
599 a596b957 2022-07-14 tracey {
600 a596b957 2022-07-14 tracey 	struct socket *sock = (struct socket *)arg;
601 a596b957 2022-07-14 tracey 
602 a596b957 2022-07-14 tracey 	event_add(&sock->ev, NULL);
603 a596b957 2022-07-14 tracey }
604 a596b957 2022-07-14 tracey 
605 a596b957 2022-07-14 tracey void
606 a596b957 2022-07-14 tracey sockets_socket_accept(int fd, short event, void *arg)
607 a596b957 2022-07-14 tracey {
608 a596b957 2022-07-14 tracey 	struct socket *sock = (struct socket *)arg;
609 a596b957 2022-07-14 tracey 	struct sockaddr_storage ss;
610 a596b957 2022-07-14 tracey 	struct timeval backoff;
611 a596b957 2022-07-14 tracey 	struct request *c = NULL;
612 a596b957 2022-07-14 tracey 	socklen_t len;
613 a596b957 2022-07-14 tracey 	int s;
614 a596b957 2022-07-14 tracey 
615 a596b957 2022-07-14 tracey 	backoff.tv_sec = 1;
616 a596b957 2022-07-14 tracey 	backoff.tv_usec = 0;
617 a596b957 2022-07-14 tracey 
618 a596b957 2022-07-14 tracey 	event_add(&sock->ev, NULL);
619 a596b957 2022-07-14 tracey 	if (event & EV_TIMEOUT)
620 a596b957 2022-07-14 tracey 		return;
621 a596b957 2022-07-14 tracey 
622 a596b957 2022-07-14 tracey 	len = sizeof(ss);
623 a596b957 2022-07-14 tracey 
624 a596b957 2022-07-14 tracey 	s = sockets_accept_reserve(fd, (struct sockaddr *)&ss, &len,
625 a596b957 2022-07-14 tracey 	    FD_RESERVE, &cgi_inflight);
626 a596b957 2022-07-14 tracey 
627 a596b957 2022-07-14 tracey 	if (s == -1) {
628 a596b957 2022-07-14 tracey 		switch (errno) {
629 a596b957 2022-07-14 tracey 		case EINTR:
630 a596b957 2022-07-14 tracey 		case EWOULDBLOCK:
631 a596b957 2022-07-14 tracey 		case ECONNABORTED:
632 a596b957 2022-07-14 tracey 			return;
633 a596b957 2022-07-14 tracey 		case EMFILE:
634 a596b957 2022-07-14 tracey 		case ENFILE:
635 a596b957 2022-07-14 tracey 			event_del(&sock->ev);
636 a596b957 2022-07-14 tracey 			evtimer_add(&sock->pause, &backoff);
637 a596b957 2022-07-14 tracey 			return;
638 a596b957 2022-07-14 tracey 		default:
639 a596b957 2022-07-14 tracey 			log_warn("%s: accept", __func__);
640 a596b957 2022-07-14 tracey 		}
641 a596b957 2022-07-14 tracey 	}
642 a596b957 2022-07-14 tracey 
643 a596b957 2022-07-14 tracey 	if (client_cnt > GOTWEBD_MAXCLIENTS)
644 a596b957 2022-07-14 tracey 		goto err;
645 a596b957 2022-07-14 tracey 
646 a596b957 2022-07-14 tracey 	c = calloc(1, sizeof(struct request));
647 a596b957 2022-07-14 tracey 	if (c == NULL) {
648 a596b957 2022-07-14 tracey 		log_warn("%s", __func__);
649 a596b957 2022-07-14 tracey 		close(s);
650 a596b957 2022-07-14 tracey 		cgi_inflight--;
651 a596b957 2022-07-14 tracey 		return;
652 a596b957 2022-07-14 tracey 	}
653 a596b957 2022-07-14 tracey 
654 a596b957 2022-07-14 tracey 	c->fd = s;
655 a596b957 2022-07-14 tracey 	c->sock = sock;
656 a596b957 2022-07-14 tracey 	memcpy(c->priv_fd, sock->priv_fd, sizeof(c->priv_fd));
657 a596b957 2022-07-14 tracey 	c->buf_pos = 0;
658 a596b957 2022-07-14 tracey 	c->buf_len = 0;
659 a596b957 2022-07-14 tracey 	c->request_started = 0;
660 a596b957 2022-07-14 tracey 	c->sock->client_status = CLIENT_CONNECT;
661 a596b957 2022-07-14 tracey 
662 a596b957 2022-07-14 tracey 	event_set(&c->ev, s, EV_READ, fcgi_request, c);
663 a596b957 2022-07-14 tracey 	event_add(&c->ev, NULL);
664 a596b957 2022-07-14 tracey 
665 a596b957 2022-07-14 tracey 	evtimer_set(&c->tmo, fcgi_timeout, c);
666 a596b957 2022-07-14 tracey 	evtimer_add(&c->tmo, &timeout);
667 a596b957 2022-07-14 tracey 
668 a596b957 2022-07-14 tracey 	client_cnt++;
669 a596b957 2022-07-14 tracey 
670 a596b957 2022-07-14 tracey 	return;
671 a596b957 2022-07-14 tracey err:
672 a596b957 2022-07-14 tracey 	cgi_inflight--;
673 a596b957 2022-07-14 tracey 	close(s);
674 a596b957 2022-07-14 tracey 	if (c != NULL)
675 a596b957 2022-07-14 tracey 		free(c);
676 a596b957 2022-07-14 tracey }
677 a596b957 2022-07-14 tracey 
678 a596b957 2022-07-14 tracey void
679 a596b957 2022-07-14 tracey sockets_rlimit(int maxfd)
680 a596b957 2022-07-14 tracey {
681 a596b957 2022-07-14 tracey 	struct rlimit rl;
682 a596b957 2022-07-14 tracey 
683 a596b957 2022-07-14 tracey 	if (getrlimit(RLIMIT_NOFILE, &rl) == -1)
684 a596b957 2022-07-14 tracey 		fatal("%s: failed to get resource limit", __func__);
685 d6267a62 2022-07-17 naddy 	log_debug("%s: max open files %llu", __func__,
686 d6267a62 2022-07-17 naddy 	    (unsigned long long)rl.rlim_max);
687 a596b957 2022-07-14 tracey 
688 a596b957 2022-07-14 tracey 	/*
689 a596b957 2022-07-14 tracey 	 * Allow the maximum number of open file descriptors for this
690 a596b957 2022-07-14 tracey 	 * login class (which should be the class "daemon" by default).
691 a596b957 2022-07-14 tracey 	 */
692 a596b957 2022-07-14 tracey 	if (maxfd == -1)
693 a596b957 2022-07-14 tracey 		rl.rlim_cur = rl.rlim_max;
694 a596b957 2022-07-14 tracey 	else
695 a596b957 2022-07-14 tracey 		rl.rlim_cur = MAXIMUM(rl.rlim_max, (rlim_t)maxfd);
696 a596b957 2022-07-14 tracey 	if (setrlimit(RLIMIT_NOFILE, &rl) == -1)
697 a596b957 2022-07-14 tracey 		fatal("%s: failed to set resource limit", __func__);
698 d6267a62 2022-07-17 naddy }